Lantern-slide.



F. J. HORSTMAN.

LANTERN SLIDE. I APPLICATION FILED 7, 1913.

Patented May 26, .1914.v

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UNITED STATES PATENT OFFICE. 4

' FRANK J.-HORSTMA-N,'OF HAVANA, ILLINOIS, ASSIGNOR OF ONE-HALF T0 C. F. WOODS,

OF CHICAGO, ILLINOIS- LANTERN--$I|IDE.

Specification of Letters Patent.

Application filed May 7, 1913. Serial No. 765,981.

T 0 all whomit may concern- Be it known that I, FRANK J. HOB-STMAN, a citizen of the United States, residing at Havana, in the county of Mason and State of Illinois, have invented a certain new and useful Improvement in Lantern-Slides, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

My invention relates-to lantern slides and has for its object the provision of an improved slide of this character which may be introduced into a projector so that an image may be projected upon a screen, which image may represent the time, for instance. This time is given or represented by two hands which are pivotally mounted, which hands are free to swing around a horizontal axis in conjunction with, say a dial, should my invention be applied for time indicating purposes. In this particular form of the invention the hands though free to rotate, when rotated will come to rest to indicate a predetermined-hour of the day depending upon how certain adjustments are made upon each hand. These adjustments in the particular embodiment herein shown consist of the movement of adjustable weights, which weights are so arranged upon the hands in connection also with numerals that the hands will come to rest in a position on the large dial corresponding to the position occupied by the weight of the particular hand as indicated upon the small dial provided upon each hand.

I will explain one form which my invention may take in connection with the accom' panying drawing illustratingsuch embodi-' ment in which g Figure 1 is a front view ofa lantern slide constructed in accordance with my invention; Fig. 2is a sectional view on line a-a of Fig. '1; Fig. 3 is a detail View of the setting mechanism, and Fig. 4 is view on line 6-?) of Fig. 3.

This embodiment of the invention consists of a transparent slide 1 having a -suita sectional able frame 2 for stiffening purposes. Upon this transparent slide 1 a suitable shaft 3 is.

mounted, which shaft is suitably held in place by means of nuts 4,4. This shaft carries two hands which are preferably placed i on opposite sides of the transparent slide 1 in order to maintain the same in better alinement, suitable nuts 5, 5 bein provided to hold these hands in place. T ese hands 7 and 8 respectively are adapted to cooperate with a dial 9 provided upon the'transparent slide 1. The dial, of course, is shown upside down in order that it may be projected in its proper. way upon the screen. Each hand is provided with a small protruding shaft 10 to which a weight 11 is pivotally secured through the agency of a projecting arm 12. There is of course suf ficient frictional engagement between the arm 12 and the shaft 10 so that the weight 11 will occupy any position into which it is placed when set. Each hand has a circular plate 13 upon which suitablenumerals 14 are placed which correspond to the numerals of the clock and in connection with which numerals the pointer 15 is supposed to be used. Whenever therefore itis desired to have these hands indicate any certain time, say eighteen minutes past one, for instance, as shown in the illustration, then the weights occupy the positions as shown in Fig. 1, the pointers 15 pointing substantially upwardly, at which time the hands will indicate that particular time desired. The numerals ii are of course so arranged that the pointer .15 may be set for each hand to the particular time desired, whereafter the slide is placed in the machine and the hands 7 and 8 both swun around theirshaft 3, thus showing upon t escreen two hands-swinging around a central axis. After the elapse of a certain time naturally these hands will come to rest and indicate the time for which these hands were set,

thus presenting a rather interesting problem to the audience-as to how these hands adjust themselves to the roper time, it being assumed of course t t the time indi cated for instance might be the correct hour .of the day or might be some other predetermined hour of the day at which some .other performance or part of erformance is to take place, at which time t e slide would beused-possibly with some explanatory lettering.

From what has been described, it is thought the nature of my inventionwill be apparent as will also the fact that many changes and modifications may be made without departing from its spirit.

weights Having however thus described one form which my invention may take, what I claim astnew and desire to secure by Letters Paten 1s:

1. A lantern slide having a fr'amework, means upon said framework for carrying a pair of pivotally mounted hands, adjustable provided upon one or the other of said han s so that said hands after being swung come to rest in a predetermined position, and a dial carried by said framework w1th which said hands cooperate.

2. A lantern slide having a framework, means upon said framework for carrying a pa r of pivotally mounted hands, adjustable weights provided upon said hands so that said hands after being swung come to rest in a predetermined position, and a dial carried by said framework with which said hands ootiperate.

3. A device of the character described having a dial, a plurality of pivotally mounted hands associated with said dial, adjustable weight-s provided upon said hands so that said h nds-after being swung come to rest in a predetermined position, and a transparent sllde upon which said dial is marked. 4. A devlce of the character described having a d1al, a plurality ofpivotally mounted hands associated with said dial, adjustable weights provided upon said hands so that said hands after being swung come to rest -1 n a predetermined position, said hands belng arranged upon opposite sides of said d al, and a transparent slide upon which said dial is marked. 5. A device of the character described havmg a dlal, a plurality of pivotally mounted hands associated with said dial, adjustable weights provided upon said hands so that said hands after being swung come to rest in a predetermined position, said hands-belng arranged upon opposite sides of said a1, a transparent slide upon which said dial is marked, and indicating means provided upon each hand in conjunction with the weights for setting1 purposes.

6. A lantern slide aving a framework,

means upon said framework for carrying a pair of pivotally mounted hands, manually adjustable weights provided upon said hands so that said hands after being swung come parent membrane carried by said frame-- work, a dial marked upon said membrane, and a pair of hands'mounted upon opposite sides of said membrane and cotiperating with said dial, said hands being provided with adjustable weights so that said hands after being swung come to rest in a predetermined position. v

9. A lantern slide having a frame, a transparent membrane carried by said framework, a dial marked upon said membrane,

and a pair of hands mounted upon opposite. sides of said membrane and cooperating with said dial, said hands being provided with manually adjustable weights so that said hands after being swung come to rest in a predetermined position.

In witness whereof, I hereunto subscribe my name this 3rd day of May,'A. D., 1913.

, FRANK J. HORSTMAN.

WVitnesses':

A. LYDA JONES, HAZEL ANN JONES. 

